Lexus GS350 driver side headlight issue with shadow line not yet diagnosed on Lexus GS350

Some Lexus GS350 owners report experiencing issues with the driver side headlight, specifically a shadow line that can be attributed to several potential causes. These include misaligned or dirty headlights, which can create shadows or dark spots in the beam. Additionally, uneven illumination may occur if one headlight outshines the other, potentially due to a faulty bulb or wiring issues. Owners have also noted that faulty wiring could result in one headlight not functioning properly, while a burned-out bulb may directly cause the shadow line issue. In some cases, a failing component in the headlight system can lead to problems even when the vehicle is off. To address these concerns, it is advised to inspect headlight alignment, check bulbs and wiring for functionality, and examine the headlight system components for any loose or dirty connections.